THERAPEUTIC AGENT FOR SPINAL CANAL STENOSIS

摘要

Remedies for spinal canal stenosis containing pyridazinone compounds represented by general formula (I) or pharmacologically acceptable salts thereof, wherein R1, R2 and R3 are each independently hydrogen or lower alky l; X is halogeno, cyano or hydrogen; Y is halogeno, trifluoromethyl or hydrogen ; and A is optionally hydroxylated C1-C8 alkylene.